package com.atguigu.lease.web.app.service.impl;

import com.atguigu.lease.web.app.mapper.UserInfoMapper;
import com.atguigu.lease.web.app.service.LoginService;
import com.atguigu.lease.web.app.service.SmsService;
import com.atguigu.lease.web.app.service.UserInfoService;
import com.atguigu.lease.web.app.vo.user.LoginVo;
import com.atguigu.lease.web.app.vo.user.UserInfoVo;
import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.CodeUtil;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.common.utils.VerifyCodeUtil;
import com.atguigu.lease.model.entity.UserInfo;
import com.atguigu.lease.model.enums.BaseStatus;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {


    @Autowired
    private UserInfoService userInfoService;

    @Autowired
    private SmsService smsService;

    @Autowired
    private StringRedisTemplate redisTemplate;

    @Autowired
   private  UserInfoMapper userInfoMapper;

    @Override
    public void getCode(String phone) {

        String code = CodeUtil.getRandomCode(6);
        String key = RedisConstant.APP_LOGIN_PREFIX + phone;


        // 1. 检查手机号码是否为空
        // if (!StringUtils.hasText(phone)) {
        //     throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        // }
        // 2. 检查Redis中是否已经存在该手机号码的key
        boolean haskey = redisTemplate.hasKey(key);
        if (haskey) {
            //    若存在，则检查其存在的时间
            Long ttl = redisTemplate.getExpire(key, TimeUnit.SECONDS);
            if (RedisConstant.APP_LOGIN_CODE_TTL_SEC - ttl < RedisConstant.APP_LOGIN_CODE_RESEND_TIME_SEC) {
                // 若存在时间不足一分钟，响应发送过于频繁
                throw new LeaseException(ResultCodeEnum.APP_SEND_SMS_TOO_OFTEN);
            }

        }

        // 3.发送短信，并将验证码存入Redis
        // String verifyCode = VerifyCodeUtil.getVerifyCode(6);
        smsService.sendCode(phone, code);
        redisTemplate.opsForValue().set(key, code, RedisConstant.APP_LOGIN_CODE_TTL_SEC, TimeUnit.SECONDS);

    }

    @Override
    public String login(LoginVo loginVo) {
        // 判断手机号码和验证马是否为空
        if (loginVo.getPhone()==null) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }

        if (loginVo.getCode()==null) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EMPTY);
        }

        // 校验验证码
        String key = RedisConstant.APP_LOGIN_PREFIX + loginVo.getPhone();
        String code = redisTemplate.opsForValue().get(key);
        if (code == null) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EXPIRED);
        }

        if (!code.equals(loginVo.getCode())) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_ERROR);
        }

        // 判断用户是否存在，不存在则注册（创建用户）
        LambdaQueryWrapper<UserInfo> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(UserInfo::getPhone, loginVo.getPhone());
        UserInfo userInfo = userInfoMapper.selectOne(queryWrapper);

        if (userInfo == null) {
            // 注册
            userInfo = new UserInfo();
            userInfo.setPhone(loginVo.getPhone());
            userInfo.setStatus(BaseStatus.ENABLE);
            userInfo.setNickname("用户-" + loginVo.getPhone().substring(7));
            userInfoMapper.insert(userInfo);

        } else {
            // 判断用户是否被禁
            if (userInfo.getStatus()==BaseStatus.DISABLE) {
                throw new LeaseException(ResultCodeEnum.APP_ACCOUNT_DISABLED_ERROR);
            }

            // 创建并返回Token
        }
        return JwtUtil.createToken(userInfo.getId(), userInfo.getPhone());
    }


    @Override
    public UserInfoVo getUserInfoById(Long userId) {
        UserInfo userInfo = userInfoMapper.selectById(userId);
        return new UserInfoVo(userInfo.getNickname(),
                userInfo.getAvatarUrl());
    }
}
